isabellahofmann6
Nissan NV Check Engine Light Air Valve Issue
Summary of the thread
A 2017 Nissan NV exhibited an intermittent check engine light at 103,984 km, suspected to be due to a defective hose connection from the air pump to the valve. This issue was thought to potentially cause a vacuum leak affecting manifold pressure, which could lead to engine stalling. A similar case was shared, where a cracked hose caused a vacuum leak, suggesting the need for professional diagnosis. Upon taking the vehicle to a certified mechanic, the suspicion was confirmed, and the defective hose was replaced, resolving the issue.
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4 comment(s)
isabellahofmann6 (community.author)
The check engine light is currently the only discernible symptom. I have not detected any noticeable changes in the engine's performance, such as rough idling or diminished acceleration. Could you please elaborate on the specifics of the air supply issue you encountered, if you recall?
kevinnacht96
Yes, the symptoms sound very similar to what I experienced. The mechanic said the hose connecting the air pump to the valve had a crack, causing a vacuum leak. Since you're not experienced like me, I would strongly suggest taking it to a qualified workshop. They'll be able to diagnose the problem accurately and carry out the necessary repairs safely.
isabellahofmann6 (community.author)
I appreciate your advice and confirmation of a potential correlation between our experiences. I followed your recommendation and took the vehicle to a certified mechanic. The diagnostic assessment confirmed a defective hose connection from the pump to the valve, resulting in a vacuum leak. The hose was subsequently replaced at a cost of 175€.
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NISSAN
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NV
kevinnacht96
I also own a NV, though not the same year. I had a similar problem with the check engine light. Was the check engine light the only thing you experienced, or were there other symptoms? Have you observed any changes in the engine's performance, such as rough idling or diminished acceleration?